The 25-year-old made his return to the pitch against El Salvador on Saturday, playing his first game since the Champions League final, when he limped off with a hamstring injury and all but confirmed the move.

"Am I going to Chelsea? It looks like it," he told reporters.

The move is expected to more than triple the wages of Costa, who is believed to earn around €61,000 a week at the Vicente Calderon Stadium. Chelsea will hand the 25-year-old a five-year contract worth €185,000 a week.

Mourinho has made no attempt to hide his desire to recruit a blue chip centre-forward amid doubts over the futures of Torres, Eto'o and Ba.